i made the mistake of buying gas at 7-11 on monday. lets just say somethings fishy, im thinking to save money, theyre pumping low octane out of the regular unleaded pump because after i filled up, my car seems really slow and i know its not just the wieght of the gas. DONT BUY GAS at 7-11, i found the gas at Albertson's to be the best so far.